//package 草稿;
//
//class Person {
//	public Person() {
//		System.out.println("this is a Person");
//	}
//}
//
//public class Teacher extends Person {
//	private String name = "tom";
//
//	public Teacher() {
//		System.out.println("this is a teacher");
//		super();
//		//Constructor call must be the first statement in a constructor
//	}
//
//	public static void main(String[] args) {
//		Teacher teacher = new Teacher();
//		System.out.println(this.name);
//		//Cannot use this in a static context
//	}
//}